C Programming Interview Questions and Answers

In this video, Faisal Nadeem shared 10 most important c programming interview questions and answers or c language interview questions and answers @Knowledge Topper with suitable examples.

Q1) What is C language?
Answer: C is a general-purpose, procedural programming language developed by Dennis Ritchie. It's widely used for system and application software.

Q2) What are the basic data types in C?
Answer: The main data types are int, float, char, and double. Each type stores a specific kind of data.

Q3) What is the difference between =, ==, and !=?
Answer: = assigns a value, == checks for equality, and != checks for inequality.

Q4) What is a pointer in C?
Answer: A pointer is a variable that stores the memory address of another variable. It's declared using *.

Q5) What is the use of malloc()?
Answer: malloc() dynamically allocates memory at runtime. It returns a pointer to the allocated memory.

Q6) What is a function in C?
Answer: A function is a block of code that performs a specific task. It helps reuse code and improve readability.

Q7) What is the difference between call by value and call by reference?
Answer: Call by value passes a copy of the variable, while call by reference passes the address, allowing direct modification.

Q8) What is a structure in C?
Answer: A structure is a user-defined data type that groups related variables of different types under one name.

Q9) What are header files in C?
Answer: Header files contain function declarations and macros. Example: #include for input/output functions.

Q10) What is recursion?
Answer: Recursion is when a function calls itself to solve a problem. It must have a base condition to stop.

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